Siemens SIMATIC S7-1200 Reference Manual page 6

Modifications and blocks
OB with modified properties
(e.g. cycle time change)
Deleted OB
New FB/FC/DB/PLC data type (UDT)
Deleted FB/FC/DB/PLC data type
(UDT)
Revised FB/FC: Code modification,
modification of comments
Revised FB/FC: Interface change
Modified DB (no memory reserve
configured): Name/type of tags
modified, tags added or deleted
Modified DB (memory reserve
configured): New tags added
Modified PLC data type
(UDT)
Modified PLC tags (added, deleted,
name or data type changed)
Modified retentivity settings (bit
memory address area, DB area)
A5E33284667-AF
S7-300 S7-400
STOP RUN
RUN RUN
RUN RUN
RUN RUN
RUN RUN
STOP STOP
RUN (Init) RUN (Init)
-- --
STOP STOP
RUN RUN
All objects
STOP
retentive
S7-1200 S7-1500
V4.0 or
higher
STOP RUN
STOP RUN
RUN RUN
RUN RUN
RUN RUN
RUN (Init) RUN (Init)
RUN (Init) RUN (Init)
RUN RUN
RUN (Init) RUN (Init)
RUN RUN
STOP STOP
S7-1200 S7-1200
V1.0 - 2.1 V2.2 - V3.0
STOP STOP
STOP STOP
STOP RUN
STOP RUN
STOP RUN
STOP STOP
STOP STOP
-- --
STOP STOP
STOP STOP
STOP STOP
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